12406587 has 4 divisors (see below), whose sum is σ = 16542120. Its totient is φ = 8271056.

The previous prime is 12406561. The next prime is 12406621. The reversal of 12406587 is 78560421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12406587 - 2¹² = 12402491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12406517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2067762 + ... + 2067767.

It is an arithmetic number, because the mean of its divisors is an integer number (4135530).

Almost surely, 2^12406587 is an apocalyptic number.

12406587 is a deficient number, since it is larger than the sum of its proper divisors (4135533).

12406587 is an equidigital number, since it uses as much as digits as its factorization.

12406587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4135532.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 12406587 is about 3522.2985393064. The cubic root of 12406587 is about 231.4998826011.

The spelling of 12406587 in words is "twelve million, four hundred six thousand, five hundred eighty-seven".